Biotechnology The US Food and Drug Administration had accepted the New Drug Application (NDA) for umbralisib, an investigational once-daily, oral, dual inhibitor of PI3K-delta and CK1-epsilon, as a treatment for patients with previously-treated marginal zone lymphoma (MZL) who have received at least one prior anti-CD20 based regimen and follicular lymphoma (FL) who have received at least two prior systemic therapies. 14 August 2020